Table I
Wavelengths of the spectral lines from the GE AH-4 mercury arc and the Westinghouse CL-2 cesium arc as recorded by the Cary recording spectrophotometer. The Beckman spectrophotometer also records lines of the mercury arc at 8195.6, 9039.2, 9425.6, 10140, and 11287A.
| Lines from Cs arc | Slit width vis. only | | Lines from Cs arc | Slit width vis. only | | Lines from Cs arc | Slit width vis. only |
---|
| 7947.6 Rb | 0.02* | | (6251) | 0.01 | | 5407. | 0.005 |
7944.11 Cs | 0.02* | | 6231.19 | 0.01 | | (5386) | 0.005 |
| 7800.23 Rb | 0.02* | | 6212.87 | 0.01 |
| 5349.31 | 0.005 |
| 7698.98 K | 0.02* | | (6193) | 0.01 | 5349.16 | 0.005 |
| 7664.91 K | 0.02* | | 6151.39 | 0.01 | 5348.95 | 0.005 |
| 7609.01 | 0.02* | | 6034.09 | 0.01 | | 5340.96 | 0.005 |
| 7279.95 | 0.02* | | 6010.33 | 0.01 | | 5306.61 | 0.005 |
| 7228.53 | 0.02* | | 5895.92 Na | 0.005 | | (5268.5) | 0.005 |
| 6973.29 | 0.01 | | 5889.95 Na | 0.005 | | 5256.79 | 0.005 |
| 6870.45 | 0.01 | | 5844.7 | 0.005 | | (5242) | 0.005 |
| 6825.22 | 0.01 | | 5839. | 0.005 | | 5227.0 | 0.005 |
| 6723.28 | 0.01 | | 5746. | 0.005 | | (5219.5) | 0.005 |
| 6628.65 | 0.01 | | 5663.8 | 0.005 | | 5199. | 0.005 |
| 6586.51 | 0.01 | | 5635.22 | 0.005 | | 5153. | 0.005 |
| 6472.62 | 0.01 | | (5574) | 0.005 | | (5119) | 0.005 |
| | | | | | | 5096.6 | 0.005 |
| 6431.97 | 0.01 | | 5569 | 0.005 | | | |
| 6365.52 | 0.01 | | 5502.9 | 0.005 | | | |
| 6354.98 | 0.01 | | 5465.9 | 0.005 | | | |
| 6326.20 | 0.01 | | (5461.5) | 0.005 | | | |
| 6288.54 | 0.01 | | 5414.2 | 0.005 | | | |
|
| Lines from Hg arc | Slit width vis. only | | Lines from Hg arc | Slit width vis. only | | Lines from Hg arc | Slit width vis. only |
|
| 7081.88 | 0.02 | | 5769.59 | 1/2 | | 4960.32 | 1/2 |
| 6907.16 | 0.02 | | 5460.74 | 1/4 | | 4916.04 | 1/2 |
| 6716.17 | 0.01 | | 5365.06 | 0.005 | | 4358.35 | 1/3 |
| 6234.37 | 0.005 | | 5354.05 | 0.005 | | 4347.50 | 1/3 |
| 6123.48 | 0.005 | | 5316.69 | 0.005 | | 4339.24 | 1/3 |
| 6072.64 | 0.005 | | 5120.55 | 0.005 | | 4108.07 | 1/2 |
| 5859.38 | 3/4 | | 5045.82 | 0.005 | | 4077.81 | 1/3 |
| 5790.65 | 1/2 | | 5025.64 | 0.005 | | 4046.56 | 1/3 |
|
| Lines from Hg arc | Slit width vis.—uv | | Lines from Hg arc | Slit width vis.—uv | | Lines from Hg arc | Slit width vis.—uv |
|
| 3983.98 | 3/4 | 0.005 | | 3561.20 | 3/4 | 4/5 | | 3771.01 | 9/10 | 0.005 |
| 3906.41 | 3/4 | 0.005 | | 3558.9 | 3/4 | 4/5 | | 3755.25 | 9/10 | 0.005 |
| 3901.90 | 3/4 | 0.005 | | 3543.08 | 3/4 | 4/5 | | 3751.74 | 9/10 | 0.005 |
| 3893.89 | 9/10 | 0.005 | | 3395. | 3/4 | 4/5 | | 3704.18 | 9/10 | 2/3 |
| | | | | 3341.48 | 1/2 | 1/2 | | 3680. | 9/10 | 2/3 |
| 3861.08 | 9/10 | 0.005 | | | | | | | | |
| 3820.13 | 9/10 | 0.005 | | 3023.48 | 1/2 | 1/2 |
| 3131.83 | 1/2 | 1/3 |
| 3801.66 | 9/10 | 0.005 | | 3021.50 | 3/4 | 1/2 | 3131.55 | 1/2 | 1/3 |
| 3790.23 | 9/10 | 0.005 | | 2967.28 | 3/4 | 1/2 | | 3125.66 | 1/2 | 1/3 |
3789.81 | 9/10 | 0.005 | | 2925.41 | 3/4 | 1/2 | | 3027.50 | 1/2 | 1/2 |
| | | | | | | | | 3025.62 | 1/2 | 1/2 |
| 3663.28 | 1/4 | 1/4 | | 2893.60 | 1/2 | 1/2 | | | | |
| 3654.83 | 1/4 | 1/4 | | 2856.97 | 3/4 | 2/3 |
| 2804.46 | 3/4 | 2/3 |
| 3650.15 | 1/4 | 1/4 | | 2820.0 | 0.005 | 0.005 | 2803.47 | 3/4 | 2/3 |
| 3593.48 | 3/4 | 4/5 | | 2810.51 | 0.005 | 0.005 | | 2799.76 | 3/4 | 2/3 |
| | | | | 2806.42 | 3/4 | 2/3 | | 2759.71 | 3/4 | 2/3 |
| | | | | | | | | 2752.78 | 3/4 | 2/3 |
|
| | uv only | | | uv only | | | uv only |
|
| 2698.85 | 2/3 | | 2482.72 | 9/10 | | 2314.39 | 0.005 |
| 2697.29 | 2/3 | | 2482.00 | 9/10 | | 2302.09 | 0.005 |
| 2674.99 | 2/3 | | 2478.66 | 9/10 | | 2285.58 | 0.01 |
| 2655.12 | 2/3 | | 2464.07 | 9/10 | | 2279.51 | 0.01 |
| 2653.68 | 2/3 | | 2446.91 | 9/10 | | 2258.77 | 0.01 |
| 2652.04 | 2/3 |
| 2399.74 | 9/10 | | 2247.70 | 0.01 |
| | | 2399.38 | 9/10 | | | |
| 2639.93 | 2/3 | | | | | 2230.04 | 0.01 |
| 2603.15 | 9/10 | | 2379.99 | 9/10 | | 2002.±1.5 | 0.3 |
| 2576.29 | 9/10 | | 2378.33 | 9/10 | | | |
| | | | 2352.48 | 0.005 | | 1973.±1.5 | 0.3 |
| 2536.52 | 9/10 | | | | | 1942.±1.0 | 0.4 |
| 2534.78 | 9/10 | | 2345.55 | 0.005 | | | |
| 2483.83 | 9/10 | | 2340.55 | 0.005 | | | |
| | | | 2323.20 | 0.005 | | | |
Table III
Measured absorbances of the screens. The tabulated absorbances D are for sizing screens of single strands of square-woven brass. The diameter of the wire, the mesh (wires per inch), and the calculated value of the absorbance D0 as obtained from the percent open area are, respectively, as follows: for screens (5–8) 0.0075 in., 28 mesh and 0.205; for screens (9–12) 0.008 in., 50 mesh and 0.444; for screens (13–16) 0.009 in., 50 mesh and 0.519; and for screens (17–20) 0.009 in., 55 mesh and 0.592.
| Ultraviolet range | Visible range |
---|
Screens | 2000A | 3500A | 4000A | 3000A | 3500A | 8000A |
---|
5 | 0.204 | 0.208 | 0.208 | 0.207 | 0.203 | 0.209 |
6 | 0.204 | 0.209 | 0.210 | 0.209 | 0.208 | 0.212 |
7 | 0.204 | 0.208 | 0.208 | 0.204 | 0.202 | 0.212 |
8 | 0.204 | 0.208 | 0.209 | 0.207 | 0.208 | 0.212 |
9 | 0.445 | 0.449 | 0.450 | 0.447 | 0.446 | 0.457 |
10 | 0.448 | 0.451 | 0.452 | 0.449 | 0.448 | 0.458 |
11 | 0.442 | 0.448 | 0.448 | 0.442 | 0.441 | 0.454 |
12 | 0.446 | 0.450 | 0.450 | 0.448 | 0.449 | 0.455 |
13 | 0.517 | 0.520 | 0.520 | 0.520 | 0.520 | 0.529 |
14 | 0.517 | 0.520 | 0.522 | 0.518 | 0.518 | 0.522 |
15 | 0.517 | 0.520 | 0.522 | 0.518 | 0.519 | 0.527 |
16 | 0.518 | 0.523 | 0.524 | 0.521 | 0.521 | 0.528 |
17 | 0.581 | 0.586 | 0.588 | 0.584 | 0.582 | 0.595 |
18 | 0.589 | 0.591 | 0.593 | 0.584 | 0.583 | 0.599 |
19 | 0.578 | 0.581 | 0.583 | 0.578 | 0.579 | 0.586 |
20 | 0.588 | 0.592 | 0.594 | 0.591 | 0.592 | 0.600 |
5+6 | 0.404 | 0.408 | 0.409 | 0.409 | 0.409 | 0.413 |
5+6+7 | 0.604 | 0.608 | 0.608 | 0.608 | 0.609 | 0.618 |
5+9 | 0.648 | 0.650 | 0.650 | 0.649 | 0.650 | 0.659 |
5+17 | 0.784 | 0.787 | 0.789 | 0.782 | 0.783 | 0.795 |
5+6+7+8 | 0.817 | 0.820 | 0.820 | 0.819 | 0.822 | 0.839 |
9+17 | 1.012 | 1.027 | 1.029 | 1.026 | 1.029 | 1.040 |
17+18 | 1.160 | 1.165 | 1.170 | 1.155 | 1.157 | 1.179 |
5+9+13 | 1.165 | 1.169 | 1.171 | 1.169 | 1.172 | 1.197 |
5+17+18 | 1.372 | 1.389 | 1.390 | 1.381 | 1.380 | 1.396 |
17+18+19 | 1.729 | 1.745 | 1.748 | 1.754 | 1.755 | 1.779 |
13+14+15+16 | 2.045 | 2.047 | 2.048 | 2.090 | 2.090 | 2.120 |
17+18+19+20 | 2.308 | 2.320 | 2.330 | 2.355 | 2.357 | 2.403 |
5+17+18+19+20 | 2.559 | 2.565 | 2.569 | 2.560 | 2.560 | 2.600 |
9+17+18+19+20 | 2.850 | 2.875 | 2.860 | 2.775 | 2.780 | 2.870 |
Table IV
Comparison of maximum and minimum absorbancies (log10(I0/I) per cm) obtained for four solutions in two different ways.
Method | Path length | Tabulated D | D0 in ref. comp |
---|
A | 1.00 cm | Dobs+1.98 | 1.98 |
B | 0.102 cm | Dobs/0.102 | 0.00 |
Solution | Method | Max. | Min. |
|
I | A | 3.62 | 2.29 |
| B | 3.70 | 2.29 |
II | A | 3.71 | 2.56 |
| B | 3.92 | 2.52 |
III | A | 3.73 | 2.63 |
| B | 3.88 | 2.57 |
IV | A | 3.72 | 2.72 |
| B | 3.97 | 2.72 |